I can't figure out how a genetically programmed A.I. can determine when there should be a constant in the final equation. If I take the formula F(m) = ma; F(m) = m9.8, how can the A.I. know what the real number 9.8 actually is? I understand that instead of putting the final number in the binary tree, you can actually put a symbol that describes a constant and then later calculate or guess what is its value in a certain way. How would you do it?